Wrench.



PATENTED MAR. 17, 1908.

J. J. WISE. WRENCH.

APPLIQATION FILED DBO. 5, 1907.

III

"HINT lg,

UNITED STATES PATENT FFICE.

JOHN I. WISE, OF PITTSBURG, PENNSYLVANIA.

WRENCH.

Application led. December 5, 1907.

T 0 all whom it may concern:

Be it known that I, JOHN J. IVrsn, a citizen of the United States ofAmerica, residing at Pittsburg, in the county el' Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inrenches, of which the following is a specification, reference being hadtherein to the accompanying drawing.

This invention relates to improvements in wrenches, and the objects ofthe invention are, first, to provide positive and reliable means forquickly adjusting the movable jaw of a wrench second, to dispense withthe use of screw threads and nuts as ordinarily used for holding anadjustable jaw in a -[ixed position g and third, to provide aninexpensive and durable wrench.

I attain the above objects by a novel construction which will beprescmtly described, and then specifically pointed out in the appendedclaims.

Referring to the drawing forming a part of this specification, Figure 1is an elevation of my Wrench, and Fig. 2 is a similar view illustratingthe movable jaw thereol", anda portion of the nail in section.

In the accompanying drawing, 1 designates a shank rectangular in crosssection. This shank has two of its opposite edges provided with teeth 2and 3, the teeth 3 being the reverse of the teeth 2, but having asimilarpitch. The shank 1 carries a 'lixed jaw 4 upon its upper end, while itslower end is contracted to provide a rod 5 upon which is detachablymounted a handle 6.

Mounted upon the shank l is a movable jaw 7 having a vertical opening 8for the shank 1. The sides of the jaw 7 are eut away as at 9 to reducethe weight ol the movable aw and save material. The jaw 7 is further cutaway to provide recesses 1() and 11, the recess 10 being formed in theupper rear edge of the jaw 7, while the recess 11 is formed in the lowerfront edge ol' said jaw and diagonally opposite the recess 10.

Pivotally mounted in the recesses 10 and 11 are pawls 12 and 13respectively, these pawls being held by pins 111. Each pawl is formedwith a toothed end 15 and with a button end 16 protruding from the sideol the aw 7. Mounted in the recesses 1l) and 11 are coil springs 17 forengaging the button end 16 of the pawls 12 and 13 and retaining thetoothed ends 15 ol4 said pawls in engagement with the teeth 2 and 3 ofthe shank 1.

Specification of Letters Patent.

Patented March 17, 1908.

Serial No. 405,172.

From the novel construction of the movable aw 7, it will be observedthat the button ends of the pawls 1.2 and 13 are approximately opposite,and in consequence ol such arrangement, the button ends of said pawlscan be easily pressed by the thumb and index linger of a hand, to adjustthe movable jaw upon the shank 1. W'hen the button ends of the pawls 12and 13 are pressed, the toothed ends of said pawls are inm'iediatelymoved out ol' engagement with the shank 1, allowing the movable aw to bequickly adjusted to the desired position.

The formation ol the teeth upon the shank 1 prevents the movable jaw 7lrom being adjusted in either direction, except when the pawls arereleased 'from the shank. But, when it is desired to raise the jaw 7, itis only necessary to move the pawl 12, at which time the jaw 7 can beelevated, while the pawl 1.2 rccedes over the teeth 2. It is onlynecessary to move the pawl 13 when the aw 7 is to be lowered.

It is thought that the manner ol operating my wrench will be apparentwithout Afurther description, and I desire it to be understood that suchchanges in the structural details as are permissible by the appendedclaims can be resorted to without departing from the spirit and scope olthe invention.

Having now described my invention what I claim as new, isz- 1. A wrenchembodying a shank having oppositely disposed edges, provided with teeth,the teeth upon one edge being reverse to the teeth of the opposite edge,a l'ixed jaw carried by said shank, a detachable handle carried by saidshank, a movable jaw slidably mounted upon said shank and havingdiagonally opposed recesses formed therein, pawls pivotally mounted insaid recesses and having toothed ends 'for engaging the teeth ol saidshank, coil springs mounted in said recesses for engaging the oppositeends of said pawls and retaining the toothed ends thereof Yin engagementwith said shank.

2. A wrench comprising a toothed shank, a lixed jaw carried thereby, ajaw movably mounted upon said shank and having diagonally opposedrecesses :lormed therein, pawls pivotally mounted in said recesses andhaving toothed ends lor engaging said toothed shank, one ol said pawlsoverlapping the top of the movable jaw and the other of said pawlsoverlapping the bottom of said movable jaw and springs mounted in saidrecesses for engaging the opposite ends of said pawls, and retaining thetoothed ends thereof in engagement with said shank.

3. A Wrench comprising a toothed shank7 a fixed jaw carried thereby, aljaw movably mounted upon said shank and having diagonaliy opposedrecesses formed therein, pavvls pivotelly mounted in said recesses andhaving toothed ends `for engaging said toothed shank, one of said paWlsoverlapping the top of the movable jaw and the other of said aWlsoverlapping the bottom of the movab e avv andv inea-ns mounted in saidrecesses for retaining said pawls in engagement with said toothed shank.

In testimony whereof I affixmy signature in the presence of twoWitnesses.

JOHN J. WISE.

